Police Nationale is not part of the military. And fire department and Gendarmerie Nationale being army units has more to do with historical/organizational/gover

Police Nationale is not part of the military. And fire department and Gendarmerie Nationale being army units has more to do with historical/organizational/governance reasons, than with a military-specific purpose. GN core mission is one of police, pretty similar to PN. Nothing related with the main army corps.